The workhorse aerospace and medical titanium alloy, machined in the United States with a process built around heat management — Grade 23 ELI available for implant work.
Ti-6Al-4V accounts for roughly half of all titanium produced, and for good reason: the alpha-beta composition of 6 percent aluminum and 4 percent vanadium delivers tensile strength comparable to mid-range alloy steels at 56 percent of steel's density, near-immunity to corrosion in seawater and biological environments, and fatigue performance that earns it a place on rotating aerospace hardware and load-bearing implants. Everything difficult about machining it flows from one property: thermal conductivity a small fraction of aluminum's. In most metals, the chip carries the cutting heat away; in Ti-6Al-4V, heat concentrates at the tool edge and soaks into the workpiece. Push the surface speed and tool life collapses; let heat accumulate in the part and dimensions wander. The alloy also work-hardens under a rubbing tool and has a low elastic modulus, so thin walls spring away from the cutter and back again. Our answer, refined across our titanium program work, is the classic titanium discipline: modest surface speeds paired with healthy chip loads so the edge stays climbing through fresh material instead of dwelling and rubbing, rigid work-holding and short tool stick-outs, constant flood coolant delivered at the cut, and toolpaths that keep the cutter engaged consistently rather than hammering in and out of corners.
Standard Ti-6Al-4V, typically supplied mill-annealed. The callout for airframe brackets and fittings, fasteners, rotating components, marine and subsea hardware, and high-end industrial parts where specific strength is the design driver. Solution-treated-and-aged (STA) condition is available against the drawing when the program needs the higher strength tier.
Extra-low-interstitial Ti-6Al-4V with tighter oxygen and iron limits, trading a small amount of strength for measurably better fracture toughness and ductility. The standard for orthopedic and dental implants and for fracture-critical aerospace structure. If your print says ASTM F136, this is the material, and the certs ship with the parts.
If the requirement is corrosion resistance rather than strength — chemical process hardware, marine fittings, some medical components — commercially pure Grade 2 machines more easily and costs less. We will say so when the drawing allows it.
Ti-6Al-4V should never be a prestige callout. If the part is not weight-critical, 17-4 PH stainless delivers comparable strength with easier machining and lower material cost; if it is weight-critical but lightly loaded, 7075 aluminum gets most of the specific strength at a fraction of the price. We quote titanium when the program genuinely needs it.
Rigidity is the first requirement titanium places on a machine, and it drives which platforms in the network see the work. Multi-face brackets and fittings consolidate onto the 5-axis trunnion mill — 19" table, 18,000 RPM spindle, 60-tool magazine — where single-setup machining matters twice over on titanium: it stacks fewer tolerances, and it avoids re-clamping a springy, low-modulus part that deflects under fixture pressure. Larger structural work runs on VMCs with travels to 32.5" × 20.5" × 20.1". Turned hardware runs on lathes with 1.625" to 3.05" spindle bores, and small implant-class and fastener-class components run on Swiss-type platforms spanning .812" to 1.50" bar, where the guide bushing supports the work at the point of cut — exactly what a flexible titanium bone screw or instrument shaft needs. Routine tolerances ship at ±.0002" with repeatability to ±.0001" on precision features; cycle times run materially longer than equivalent stainless features, and honest lead-time planning accounts for that up front.
The two anchor markets are aerospace — brackets, fittings, engine-adjacent hardware, and fastener-class components where every gram removed from structure pays back over an airframe's life — and medical, spanning orthopedic and dental implants in Grade 23 ELI and reusable surgical instruments that survive thousands of autoclave cycles without corroding. Between them sit defense optics and sensor mounts that must hold alignment through thermal cycling, and marine hardware that lives in seawater without coatings. Mill certifications and full lot traceability ship with every titanium job as a matter of course.
Surface finish on a Ti-6Al-4V finish pass runs 32 Ra or better. Bead blasting and vapor blasting within the network deliver the uniform matte and satin surfaces common on medical and optical hardware. Anodizing — Type II and Type III color anodize for part identification and Type I where the spec requires it — passivation, and any coating processes are coordinated with qualified finishers on the program's schedule. Because titanium's finished surface is also its fatigue surface, finishing callouts get engineering attention, not just cosmetic attention, before the quote goes out.
Grade 23's tighter oxygen and iron limits buy fracture toughness and ductility, making it the standard for implants (ASTM F136) and damage-tolerant structure. Grade 5 is the default for everything else. We machine both, with certs documenting the grade.
Low thermal conductivity forces cutting speeds a fraction of stainless practice, so cycle time and tooling consumption run high, and raw bar costs several times more than stainless. The premium buys steel-class strength at just over half the density.
Routine ±.0002", repeatability to ±.0001" on precision turned features — the same class as our other alloys. Thin-wall titanium gets dedicated work-holding planning because the alloy's low modulus lets light structures deflect under cutting load.
The full titanium family, including Grade 2 CP for corrosion-driven work.
The aerospace aluminum — most of the specific strength at a fraction of the cost.
Comparable strength with easier machining when weight is not the driver.
The corrosion-service alternative for non-implant medical and marine work.
Guide-bushing support for slender titanium implant and fastener work.
5-axis milling, Swiss turning, and inspection across an ISO 9001:2015 certified production network.
